BLU Vivo X vs Xiaomi Redmi 7A

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900, CDMA 800
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 2100, TD-SCDMA 1900, 2000
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 28(700)

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
HSDPA speed

42.2 Mbps

-
HSUPA speed

11.5 Mbps

-
EV-DO speed

-

3.1 Mbps download, 1.8 Mbps upload
LTE-A speed

LTE-A, (2CA) Cat6, 300 Mbps download, 50 Mbps upload

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, plastic

Polycarbonate
SIM

Hybrid Dual SIM (Micro-SIM/Nano-SIM, dual stand-by)

Dual SIM (Nano-SIM, dual SIM stand-by)
Height

160 mm

146.3 mm
Width

76.8 mm

70.41 mm
Thickness

8.2 mm

9.55 mm
Weight

188 g

165 g
Colors

Black

Black, Blue

Main camera
Camera type

Dual

Single
Main camera

13 MP, 1/3" , 1.12 µm

13 MP, 1.12 µm, f/2.2
5 MP, 1/5" , 1.12 µm
Primary camera resolution

4160 x 3120 pixels

4160 x 3120 pixels
Primary camera video

1080p@30fps

1080@30fps
Primary camera Autofocus

phase detection autofocus

-
Primary camera flash

LED flash

dual LED flash
Camera features

Geo-tagging, HDR, face detection, touch focus

Autofocus, continuous shooting, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection, macro mode

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Email

Push Email

-
Sensors

Fingerprint (rear-mounted), accelerometer, compass, gyro, proximity

Accelerometer, proximity, light, compass